Classification
330 - Economics
42
320 - Political science
34
600 - Technology
8
700 - The arts; fine & decorative arts
7
363 - Other social problems & services
6
000 - Computer science, information & general works
5
620 - Engineering & allied operations
5
333 - Economics of land & energy
4
340 - Law
4
540 - Chemistry & allied sciences
4
576 - Genetics & evolution
4
660 - Chemical engineering
4
500 - Natural sciences & mathematics
3
800 - Literature & rhetoric
3
900 - History & geography
3
300 - Social sciences
2
541 - Physical chemistry
2
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
1
160 - Logic
1
304 - Factors affecting social behavior
1
332 - Financial economics
1
380 - Commerce, communications & transportation
1
546 - Inorganic chemistry
1
580 - Plants (Botany)
1
610 - Medicine & health
1
621 - Applied physics
1
628 - Sanitary & municipal engineering
1
720 - Architecture
1